the woman's son said today his mother was visiting from china. investigators say the driver struck the four pedestrians as they walked. the impact knocked them down a steep dark hillside making rescue efforts difficult. police arrested a 24-year-old woman on charges of felony dui and hit and run. >> a shooting in a bank parking lot prompted two schools to go on lockdown this afternoon. police say they told the two schools livermore high school and st. michael elementary school to go into lockdown mode. livermore police say it began when someone opened fire at someone sitting in their car in a bank of america parking lot. no one was hurt. two people were arrested in connection with the shooting. >> 20 children and six school employees were gunned down. since the massacre a public debate about gun control has reignited without the voice of the nra until today. mike mibach joins us now. ramp the nra is calling it a national school safety shield program. it says it will help recruit and train volunteers to help guard students. if congress gets arm pr